Mower Height Adjustment Knob

The factory mower height adjustment knob on John Deere belly-mower tractors works, but it's small and hard to grab – particularly with gloves or dirty hands.

This T‑shaped replacement knob is designed to give you a bigger, more comfortable handle for dialing in your cut height. The extended wings provide better leverage so you can make precise adjustments without fighting the factory knob.

Features

• T‑shaped profile for a secure, full‑hand grip
• Easier to turn under load than the OEM knob
• Durable material made for outdoor use
• Clean look that matches the rest of the control area

Installation

1. Pop off the factory height adjustment knob (a bit of gentle leverage may be needed).
2. Align the flat side of the mower height shaft with the flat side inside the new knob.
3. Press the new knob down firmly until it seats fully.

Fitment

Direct replacement for John Deere OEM knob AM123734, used across the entire belly-mower / mid-mount AutoConnect lineup.

Sub-compact & compact utility tractors

• 1-Series: 1023E, 1025R, 1026R
• 2-Series (current): 2025R, 2026R, 2027R, 2032R
• 2-Series (older): 2210, 2305, 2320, 2520

Compact lawn & garden tractors

• 325, 335, 345, 355
• GX325, GX335, GX345, GX355

Lawn tractors

• LT133, LT150, LT155, LT160, LT166, LT170, LT180, LT190
• LTR155, LTR166, LTR180
• SST15, SST16, SST18

X-Series garden tractors

• X465, X475, X485, X495, X575, X585, X595
• X700, X710, X720, X724, X728, X729, X730, X734, X738, X739, X740, X744, X748, X749, X750, X754, X758
• X940, X948, X949, X950R

Compatible mower decks: 54D, 60D, 62", 72D

Questions about fit or compatibility? Email sales@rob-makes.com with a photo of your control area.